* {
    padding: 0px;
    margin: 0px;
    color: #fff;
}
input{
    outline: none;
}

/* 外部容器 */
.outer_box {
    position: relative;
    width: 100%;
    height: 100%;
    background-image: url('https://pic3.zhimg.com/80/v2-804f86bc3b424df6605401d6dc52dbf6_1440w.jpg');
    background-size: 100% 100%;
}

/* 登录表单 */
.inner_box {
    position: absolute;
    width: 330px;
    height: 360px;
    left: 32%;
    top: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(134, 221, 221, 0.219);
    box-shadow: 0px 0px 5px rgb(76, 219, 219);
    text-align: center;
}
.title {
    width: 100%;
    height: 60px;
    line-height: 60px;
    /*background-color: rgba(82, 202, 182, 0.575);*/
}
.inp {
    outline: none;
    width: 230px;
    /*margin: 10px 50px 0px 40px;*/
    height: 50px;
    padding-left: 20px;
    /*margin-bottom: 10px;*/
    background: none;
    border: none;
    border-bottom: 1px solid #fff;
    font-size: 15px;
}
.inp::-webkit-input-placeholder { /* WebKit browsers，webkit内核浏览器 */
    color: #fff;
}
.inp:-moz-placeholder { /* Mozilla Firefox 4 to 18 */
    color: #fff;
}
.inp::-moz-placeholder { /* Mozilla Firefox 19+ */
    color: #fff;
}
.inp:-ms-input-placeholder { /* Internet Explorer 10+ */
    color: #fff;
}
.sel{
    outline: none;
    width: 230px;
    height: 50px;
    margin-left: 10px;
    border:none;
    background: none;
    font-size: 15px;
}
.sel option{
    background: none;
    color: #fff;
}
/* remember me */
.chk{
    height: 40px;
    line-height: 40px;
    margin: 10px 20px 0px 20px;
    display: flex;
    justify-content:space-between;
    font-size: 14px;
}

/* 登录按钮 */
.signIn_btn {
    height: 50px;
    width: 120px;
    display: inline-block;
    line-height: 50px;
    margin: 5px;
    margin-top: 20px;
    background-color: rgba(134, 221, 221, 0.219);
    box-shadow: 0px 0px 5px rgb(76, 219, 219);
    text-align: center;
    cursor: pointer;
}